Rotary valve reamer



s.' 1,604,966 Nov' 2 192 A.' BRooKs Er` Al.

ROTARY VALVE REAMER Filed Marjch 14, 1925 Wl, fao/f6,

@111km nui Patented Nov. 2, 19213.

narran srars ROTARY VALVE BEAMER.

Application led March 14, 1925. Serial No. 15,546.

The present invention relates to a valve rea-mer of the rotary type, andhas for its principal object to provide an efficient tool of thisnature, for refacing valves and valve seats, particularly of internalcombustion engines.

Another important object of the invention is to provide a. reamer ofthis nature which will reface the valve and the valve seatsimultaneously.

Another important object of the invention is to provide a device of thisnature, which has a simple structure, one Which reliable in operation,easy to manipulate. not liable to readily get out of order, one Whichmay be quickly assembled and disassembled, one which is strong anddurable, and otherwise Well adapted to the purpose for which it isdesigned.

`With the above and numerousiother objects in view, as will appear asthe description proceeds, the invention resides in certain novelfeatures of construction, and in the combination and arrangement ofparts as Will be hereinafter more fully described and claimed.

In the drawing:

Figure 1 is a vertical section, through the improved device, embodvinofeatures of our invention.

Figure 2 is a fragmentary vertical section, taken at right angles to thesection shown in Figure 1.

Figure 3 is a top plan view of the device, With the bail removed.

Figure 4 is a bottom plan view of the reaming block.

Figure 5 is a perspective vievv of the filling sleeve for the reamerblock.

Referring to the drawing in detail, it will be seen that 5 designates acylindrical body, the upper edge of which is provided with recesses 6 atdiametrically opposed points. The bottom edge of the body 5 is turnedinwardly to form a brace flange 7. A reamer block 8 is constructed witha longitudinally extending bore 9, and at its upper end with an annularshoulder 10. The upper end of the block 8 is concaved in a frustoconicalmanner, While the lower end is convexed, in a frusto-conical manner. The`upper end 11 is provided With roaming teeth and is shown in Figure 3,While the lower end 12is also provided With reaming teeth, as is shownin Figure 4. An annular shoul der 13 is provided on the exterior surfaceof the block 3, and the shoulder 10 is bevelled as at 14, for formingrace. This `block 8 is mounted for rotation in the body 5, and bearings16 of the spherical or ball type, are disposed on the race flange 7 andengage the shoulder 13. Similar ball bearings 17 are mounted upper edgeof the on thel bevelled race 14, and a ring 13 is` tbrea led into theupper end of the cylindrical body 5, so as to engage these ball bearings17. rilhe lower surface of the annular shoulder 10k is in the form of abevelled gear 19. A bearing 2O is threaded into the. body 5, as at 21,and rotatably receives a shaft 22, n

having a suitable crank 23 on the outer ond thereof. A bevelled pinion24 is disposed on the inner end of this shaft 22, and meshes with thebevelled'gear 19.

A conventional valve is illustrated in Figcommunicating With therecesses 6 transversely thereof. A bar 32 is slidable through theintermediate portion of the bail 29, and the upper end thereof has aretaining knob 33 fixed thereto. A yoke 34 is fixed to the bottom end ofthe bar 32, and pivotally supports, as at 35, a key 36, having at oneend a slot engaging blade 37, and at its other end a pair of depressionengaging members 38. Some valves are provided on their upper faces withtwo spaced depressions, which may be engaged by the member 38, Whileother valves are provided With slots, and therefore the key 36 wouldhave to be reversed from the position shown in Figure 1, in order thatit may be engaged by the blade 37. A spring 39 is coiled about the bar32, and has one end engaged against the intermediate portion ofthe bail29, While the other end is engaged against the yoke 34, so as to holdthe key 36, in engagement with the valve 37. A filling sleeve 40 isadapted to be inserted in the. bore 9 of the block 8 and the bore ofthis sleeve should conform in its diameter With the diameter of theparticular valve stem 25. In other Words, with this tool, there Would beprovided a set of the filling sleeves 40. A pair of screws 41 are ichthreaded into the upper edge ot the body 5, so that the heads may engagethe ring 18 and lock the same in engagement With the body.

From the above detailed description, it will be seen that one hand maybe engaged upon the knob 33, tor preventing` the rotation of the bar 32and the valve proper 27, and the other hand engaged with the crank Q8.Upon turning this crank 23, the shaft 2Q will be turned, therebyactuatingl the pinion 24, the gear 19, and rotating the block 8. Sincethe valve 27 and the seat 28 are stationary, it will be seen that thereamer block Will retace the valve and the seat simultaneously.

lt will also be noted that the device is capable ot being very easilyassembled and disassembled, and is easily operated. The presentembodiment of the invention, which We have described in detail, attainsall or the features ot advantage enumerated as de sirable, in thestatement ot the invention and the above description, but it is desiredto point out that numerous changes in the details ot construction, inthe size, in the materials, and in the combination and arrangement ofparts may be resorted to, Withontdeparting from the spirit or scope otthe invention as hereinafter claimed, or sacrificing any of itsadvantages.

Having thus described our invention, what We claim is:

l. A refacing tool ot the class described, including a cylindrical body,a block rol'atn ably mounted in the, cylindrical body and being reducedintermediate its ends to provide a beveled shoulder vhaving gear teethformed thereon, a shaft journaled transversely of the body and having apinion on the inner end thereof meshing With said gear teeth whereby therotation of the shaft lwill cause rotation ot the block, the lower taceof the block being convened, the up per tace ot the block beingconcaved, both ot said faces being ot a trusto-conical torination havingreamer teeth formed thereon.

2. A refacing tool of the class described,

including a cylindrical body, a block rotatably mounted in thecylindrical body, means ter rotating the block, said block provided withreamer ends, an inverted U-shaped bail detachably engaged with the upperend ot the body, a bar extending through the inten mediate portion otthe bail and provided with a valve engaging means on its lower end, aknob on its upper end, a spring disposed about the bar between the valveengaging means and the bail, and a sleeve disposed in said block 'forreceiving a valve stem.

In testimony whereof We afix our signatures.

ANDREV BROOKS.V WILLIE L. BROOKS.

